Designed by Lee Krasnow, Pacific Puzzle Works, published August 29, 2018.
(Printed on a Monoprice Mini V1 3D printer, from Thingiverse thing 2975065, 2019,
PLA plastic, 1+7/8" square)

Three identical pieces slide together in a simultaneous symmetric motion to form a cube. Below on the left shows the other three faces of the assembled cube and on the right the pieces.



Further Reading
Slideways Thingiverse Page, from: http://www.thingiverse.com/thing:2975065
Slideways Metal, from: http://www.etsy.com/listing/617915791/slideways-cube?ref=shop_home_active_16